Scroll compressor with improved scroll curves

Abstract

A scroll compressor includes a fixed scroll including a fixed mirror-like surface and a fixed wrap that is extended from the fixed mirror-like surface, formed in a hybrid curve, and includes a thick portion thicker than other portions; an orbiting scroll including an orbiting mirror-like surface and an orbiting wrap extended from the orbiting mirror-like surface and formed in a hybrid curve; and a rotating shaft configured to rotate the orbiting scroll, wherein the orbiting scroll revolves relative to the fixed scroll. A center of a curve of a center portion of the fixed wrap is located at a position offset by a predetermined distance in a direction of reducing a thickness of the thick portion of the fixed wrap from a center of the fixed mirror-like surface, and a center of a curve of a center portion of the orbiting wrap is offset to correspond to the fixed wrap.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based on and claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2017-0111657, filed on Sep. 1, 2017, in the Korean Intellectual Property Office, the disclosure of which is incorporated by reference herein in its entirety.BACKGROUND1. Field[0002]The present disclosure relates to a scroll compressor, and more particularly to a scroll compressor having a reinforced wrap.2. Description of the Related Art[0003]A scroll compressor is a device that has a fixed scroll and an orbiting scroll each having a spiral wrap which are engaged with each other and compresses refrigerant by rotating the orbiting scroll relative to the fixed scroll.[0004]The scroll compressor has a plurality of compression portions formed by the fixed scroll fixed within a hermetic container and the orbiting scroll rotating against the fixed scroll. The plurality of compression portions gradually narrows from the outer peripheral sid...

AI Technical Summary

Benefits of technology

The present invention is related to a scroll compressor that can improve reliability and maximize compression capacity in a limited space. One aspect of the invention is to have a fixed wrap with a center portion located at a position that is offset from the center of the fixed mirror-like surface in a direction where the thickness of the thick portion of the fixed wrap is reduced and the thickness of the suction portion of the fixed wrap is increased. This results in a more efficient compressor design that can achieve better performance and reliability.

Problems solved by technology

However, the larger the compression capacity is designed, the smaller the wrap thickness of the outermost portion of the scroll compressor using such a hybrid wrap.

When the wrap thickness is reduced, there is a problem that the reliability of the scroll compressor is lowered, for example, cracks are generated in the wrap when the scroll compressor is speeded up.

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